Continental Ultra Contact 225/60 R18

Continental Ultra Contact is a tyre made in total of 46 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/60 R18 is 70mm wider than the narrowest dimension (155) and -20mm narrower than the widest one (205). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (225mm), which results in 135mm sidewall height.